Provided are a portable communication terminal that is easy to manipulate for games and a user interface device of the portable communication terminal. The portable communication terminal includes a main body, a rotation unit combined with the main body unit with respect to a hinge shaft at a predetermined position of the main body unit to be folded or unfolded and rotating towards or away from a top of the main body unit to open or close the top of the main body unit, and a slide unit combined with the main body unit to move while facing the main body unit and moving on a top of the rotation unit to open or close the rotation unit when the rotation unit is folded to the main body.